Machine for inserting fasteners in leather.



T. G. PLANT. MACHINE FOB. INSEETING FASTENERS IN LEATHER. APPLICATIONFILED JUNE 16, 1908. 946,8Q5, Patented Jan. 18,1910.

5 SHETS-SHEET 1,

T. G. PLANT.

MACHINE FOR 'INSER'I'ING FASTENERS IN LEATHER. xnmowlon FILED JUNE 15,190B.

' 946,825. Patented Jan. 18,1910.

5 SHEETSSHEET 2.

wm'sw; H E jwe/wn 7 I r v T. G; PLANT.

menu FOR msnmme FASTENERS IN LEATHER.

APPLIOATIOH TILED JUNE 16, 1908.

' Patentad Jan. 18,1919.

6 SEEETS-SHEET 3.

T. G; PLANT.

' MACHINE FOR INSERTING FASTENERS IN LEATHER.

APPLICATION FILED JUNE 16, 190B.

Patented Jan, 18,1910.

5 SHEETS-SHEET 4.

T. G. PLANT. MACHINE EOE INSERTING' FASTENERS m LEATHER.

APPLICATION :IL'BD JUNE 16, 1908. 946,825, Patented Jan. 13,1919.

5 SKEETB-BEEET filll lll ll lil ii 'I'HDIVIAS G.

.PLANT, Q BOSTUN,

lvIASSi-LCH'L'TSETTS.

MACHINE FOR INSERTING- FASTENERS IN LEATHER.

Specification of Letters Patent.

Application filed June 16, 1908.

ings, is a specification, like characters on the drawings representin keparts.

This invention l'fihtttzb' to machines for forming metallic fasteningsfrom wire and inserting such fastcnings in leather or ther material, andwhile it is possible to embody the invention in machines for insertingvarious kinds of iiastenings l have, in order to illustrate the featuresof the invention, elected to show it as embodied in a machine which isknown to the trade as a slugger that is, a machine adapted to drive theslugs. or other tastenina's into the heels orv soles of boots or shoes.the invention, however, is not limited'in all its features to a machineof this particular type.

The general object of the invention is to improve this type of machinein various ways so as to simplify and cheapen the construction thereofand make the machines easier to manipulate.

More specifically the objects of the invention are to provide a novelconstruction of wire-gripping and wire-feeding mechanism in which thevarious parts of the mechanism are so arranged that the gripper carrierswhich sustain the grippers are permanently secured to thegripper-actuating ring so as to avoid all danger of losing these partswhen they are removed from the machine; to provide a novel constructionby which the throat pieces of the wire-feeding mechanism can be properlyadjusted to correspond with any size of wire; to provide a novel form ofresser-platewhich permits the spindle extension and'the grippers to bemore readily removed from the working head; to provide a novel feedingmechanism by which the fastenings may be driven either in double row orsingle row as desired; to pro vide a novel device by which the spindleextension and the parts thereof may be properly ad usted for any sane ofwire and relative to each other before inserting them into theworkinghead so that when they -are inserted. the proper adjustmentthereof will not be destroyed; and to otherwise improve generally theinachnies of this construction all as will be mor fully hereinafterdescribed and then pointed out in the appeijided claims.

Referring to the drawings, Figure l is a front elevation of a head oil amachine cmbodying my invention; Fig. 2 is a detail of the double rowattachment; 3 is a side view of the machine shown inFig. 1; Fig 4- is alongitudinal section through the driving sliatttshowing the stopping andstartinn mechanism; Fig. :3 is a top plan view or a. portion of the headshowing the connection between the driving shaft and the spindle; Fig. 6is a de.ail of the swing ing presser-plate; Fig. 7 is an enlargedsectional view through the upper end of the spindle showing the mannerof attaching the crank arm thereto; Fig. 8 is a section on the line02-50, Fig. 9; Fig. 9 is a vertical longitudinal section through thewire-gripping mechanism Fig. 10 is a section on the line y-y, Fig. 9; l'ig. 11 is a side view of the spindle extension with a portion thereofbroken out; Fig. 12 is a detail showing the gripper-actuating ring andgripper carriers; Fig. 18 is a bottom plan view of the spindleextension; Fig. 14: IS a section on the line a, Fig. 8; Fig. 15 is anelevation of a positioning device adapted for properly positioning theparts of the spindle extension and gripping mechanism preparatory to insorting them in the. working head; Fig. 16 is an end view of the spindleextension and associated parts to be positioned; Fig. 17 shows themanner in which the positioning device is used.

litany elements of the machine herein shown are those which are commonlyfound in machines of this class and are the horn 2 on which the shoe issupported while the slugs are being driven, the feed bar 6 and itsoperatingmechanism by which the work is fed forward, and the workinghead 3 which moves vertically in a. hearing a sustained by the head 5.of the machine and,

which has associated therewith the usual grippers for feeding the wireforward and driving it into the work, gripper-actuating mechanism andthe knives or cutters forsevering' the driven fastenings from the Wire.The working head is given an up and down reciprocating motion in thebearing. bymeans the pitman 51 which is pivotally mounted'at its upperend upon the-crank 9- ot the main driving shaft 10, said airman;

being pivotally connected to the working;

' at its lower end a bracket or headQGO LI which are mounted the knivesi" r co the driven fastening from the wir knives being actuated by anysuitab. usual mechanism. Situated within the inner 1o sleeve 7 is thespindle 8, said spindle being Y 64 is provided with a handle 6410 bycapable of turning movement within the sleeve but being secured to thesleeve that it moves vertically in unison wi h the sleeve. lhe sleeve 7has rigid therewith a collar which is adapted'to rest against the top ofthe Working head 3, as shown in the drawings, and this collar is actedon by a suitable spring 57 which tends to keep the collar in contactwith the working head so that as the Working head is raised and loweredby the action of the crank 9 and pitman 51, the sleeve and spindle aremoved vertically with the head. In this embodiment of my invention thespring 57 is a coiled spring which is coiled about a stud 58 extendingfrom the frame and one end of the spring is secured to a forked arm 59pivotally motpited on the stud and having engagement with pins 60extending laterally from the collar '56-, and the other end of thespring being secured to a Worm gear 61 which is loose on the stud andwhich meshes with a worm 62 carried by a shaft 64 which is mounted in asuitable bearing 63 formed on the head 5. The WlllCfl a pro-- it may beturned. This construct: vides a simple means for adjustsion of the 5ring 57, for the ten spring may e either increased or by turning theshaft 64 in on the other. lhe worm 62 operates. tive lock for the wormgear 61 'tions thereof. The bracket or head ries at its lower end apresser-platc is adapted to rest on the work while tening is beingdriven;

In the operation of the device, the wok- .ing head and the sleeve andspindle are lowered by the crank 9 and the spring-'3? until .50 thepresser-plate strikes the w rk when the sleeve 7 and spindle come torest while the Working head continues its downward movement and throughthe action of the usual. grippers forces the Wire into the work. The

55 grippers are caused to grip thewire by a turning movement of thespindle o as is .common in machines of this class, the turningmovementwhich causes the grippers to engage the wire being given to thespindle so just before the spindle descends and the reverse turningmovement to cause the grippers to. release the wire being given thespindle just after the descend ng movement and before the spindle rises.

The spindle 8 carriesat its lower end see Fig. a coupling member orchuck 10 pro- 3 a noted ith downwardly-extendcd arms 11 clamping bolt16. said bolt passing through a slot 1' ifrnnred in the apron 201 andthrough a. clan jaw or shoe 18 which is dovetailed 1 dove-tailor groove19 formed in l fio" i the. ap on.

air: the grip v actuating ring L the usual slottec spindle extension 20which has situated within at its lower end the two throat "pieces 21that project slightly beyond the spindle extension and form b tween themthe throat through which tl e wire is led. Thespindle extension hasrect'vcd within the slots thereof two grippers which are adapted toengage the wire and feed it forward, said grippers being sustaii ed bygripper carriers 23. he spindle xtension has within it the usual uppergrip which are adapted to prevent baclo a r l movement of the wire. Thespindle exension is held from turning by means or" two owel-pins 130which extend from the lower nd thereof and fit into recesses formed in eprcsser-plate 37., and the gripping sleeve vand the threaded sleeve 1.5are also held ron .1 ning by the clamping bolt 16 which clam are or maybe of any suitable or usual com.

struction except in the particularshereinafter pointed out.

One feature of my present invention relates to the manner of securingthe grippers and carriers 23 in place. In machines as now commonly madethese parts are loosely sustained in the slots in the spin- .nem to thenon-rotatable apron 201. The turning movement of the spindle 8, howt theri) ers 22 and when said rin is {a lP g die extensionand when saidspindle eXtension removed from, the machine for any purpose, thegrippers and gripper carriers are very apt to be dislocated from theirproper position. Before the/spindle exten- .sion can. be replaced againin the sleeve the grippers and gripper carriers must be replaced in thespindle extension. and with the construction now connnonly used this isa matter of more or less diiliculty and requires more or less time.Furthermore in the machines as heretofore made the gripperactuating ring13 has direct engagement .with the ends of the grippers, so that anyturning of the ring relative to the gripping sleeve ll to force thegrippers downwardly against the inclined surface 26 oi the sleeve 14 tocause them to gri p the wire, causes a relative movement between saidring and the grippers. T relative movement, however, is comparativelysmall so that all. the wear between the i pets and the gripperactuatingringco. on a small poition ol' the said ring. s esult; the ring becomesWorn in spots and after it has become thus worn, it will fail toproperly operate the grippers to cause them to grip the wire. lln mypresent invention i have )IOVldOd a novel construction oi. grippingmechanism wherein the grippers and gripper carriers will be held in thespindle extension and will be prevented from dropping out therc-- fromwhen the latter removcd'from the working head, and have also provided anovel construction whereby the wear be tween the grippers andthegripper-aetuating ring is eliminated. This feature of my improvement isshown best in Figs. 9 to l2 inclusive. The gripper carriers 522 arepermanently secured to the gripper-actualting ring 13 so that they willnot becon'ic dislodged when the grippers are removed. These grippercarriers each have projecting therefrom a lug 31 which enters a grooveformed in the interior of the ring 15, and said gripper carriers areheld in place in the ring by being secured to a bearing ring 33 whichhas bearing against the lower face of the gripper-actuating ring" andagainst the top end of the. grippers. While the gripper carriers may besecured to this ring; in any suitable way i have shown for this purposepins 34- which extend up through the hear ing' ring 33 into the grippercarriers. This provides a construction wherein the gripper carriers arepermanently SGt'lHO 'l to the gripper-actuating ring, as shown in Fig.12, and hence said gripper carriers will not drop out of place when thering is removed. The bearing ring also has bearing: against the upperends of the grippers 22, as stated above, and transmits the thrust ofthe gripper-actuating ring to the grippers. \Vhen the gripper-actuatingring is turned by the turning of the spindle iii usual manner, said ringturns relative to and bears against the bearing ring 33, a nd' thelatter bears against the upper end of the grippers, but has no movementrelative thereto. All the wear to which the gripper-actuating ring issnbjected therefore is evenly distributed over the entire surface ofsaid ring, and no hollows or recesses will be worn in the lower edge ofthe ring is done in the old construetion. This gripperactuating ring,therefore, operates both as a means for holding the gripper carriers inposition in the ring even after the gripper are removed and alsoprevents any wear occurring be tween the grippe and said ring.

The throat pieces 2]. engage the wire 220 immediately above the stockinto which it is driven and. act to guide the wire while it is lacingdriven. in order to properly guide the wire, said throat pieces shouldfit the wire closely, for it the wire has any lateral play between saidthroat pieces the fastenings are apt to be driven out of position or atan improper inclination. in machines of this class as now commonlybuilt, the wire receiving rooves formed in the throat pieces become wornafter the machine has been used some time. so that the wire hassufficient lateral play at the mouth of the groove to negative properdriving of the sing or other fastening. In order to provide formaintaining the throatpieces in proper position at all times, i, haveprovided for adjusting one of the throat pieces as wear occurs so thatthe wire will always be firmly held by the throat pieces. In the presentembtnlin'ient 01 my invention this is accomplished by means of anadjusting wedge 35 which is situated to engage the outside of one oi?the throat pieces. This adjusting wedge has an interior surface shapedto fit the exterior suriare of the throat piece and an exterior surfaceto lit a wedge-shaped recess formed in the spindle extension 20, asplainly seen in Figs. it and i The throatpieces and also the wedge 35amheld in place by means of the usual clamping screws 36 which areinserted through the side of the spindle extension into one of thethroat pieces. lVhencver the throat pieces become worn so that the wireis loose in the wirereeeiuirggroove termed therein, the lower clampingscrew as can be loosened and the wedge 35 driven upwardly suliicientlyto tak up '\\'liatever wear has oecu red, and, when properly at'ljusted,the wedge may be held in place by tightening the screw 36.

in machines of this class as commonly made, the presser-plate 37against, which the work has contact covers the end of the spindleextension, and inorder to remove the spindle extension for making anyadjustment therein, or clearing the grippers if they become clogged, orfor any other pur pose., it has been necessary to first remove 3 iii thespindle extension whenever it is desired to remove said spindleextension. In the present embodiment of my invention this presser plateis pivoted at its 'rear end, as at 38, to the bracket 200 so that saidpresser plate may be swung down into the position shown in Fig. 6, forinstance, in which position it is out of the way of the spindle eX-tension. Said presser-plate is held ,in its operative position, shown inFig. 3, by the usual knives l0 which operate to sever the wire after thefastening is driven. These knives play in apertures -l-1 formed in thepresser-plate 87, and when in position they serve to hold saidpresser-plate in its operative position. in order to permit thepresser-plate to swing downwardly, the knives have to be removed.

My invention also involves an improved connection between the spindle 8and the mechanism for turning it, which connection is provided withnovel means to adjust it for the purpose of taking up any wear which mayoccur.

The driving shaft 10 is provided with the usual crank portion 52 onwhich is pivotally mounted the knuckle piece 42 which is pivotallyconnected at lS to the yoke 44, the latter being pivoted'at 4:5 to anarm 132 extending from the frame The oke 4% extends around the inside ofthe spindle 8, as plainly seen in Fig. 5, and it has swiveled near itsouter or free end as at a6 a supplemental yoke 4t? provided with avertically-extending pivotal rod 48. The spindle 8 has ere tending fromits upper end an arm l?) provided with an eye 50 through which thepivotal rod 48 extends sothat said. eye can both slide vertically on therod. as the spindle rises and falls and can also turn relative thereto.The rotation of the crank 52 will give the knuckle piece 42 a movementtransverse to the axis of the shaft 10, and said knuckle piece willoperate to swing the yoke l l about its pivot 45 thereby through theauxiliary yoke 47 and arm 49 operating to oscillate the spindle 8 aboutits axis. The

turning movement of the spindle 8 is for thepurpose of causing therippers to clamp and release the wire, and it is essential, therefore,that this turning movement should be the propcramount to secure thisdesired end. I have, therefore, provided an adjustable coni'iectionbetween ,the spindle 8 and the arm d9 whereby any wear which occursbetween the parts may be taken up so that the spindle andgripper-actuating ring may always be. turned the proper amount. Asherein shown the arm 19 is provided with an eccentric portion 54: whichextends through the spindle 8, said arm being clamped to the spindle bysuitable clamping nuts 55 When the parts need adjusting on account ofwear, the arm 49 may be turned 1n. the spindle 8 bottom side Erem whatsee,

is shown in Fig. 7, thereby shifting the po sition of the eye 50laterally from that shown in Fig. 7 This is a simple way of providingfor adjusting the eye laterally to take upany slack due to wear of theparts.

lllachines of this type are commonly provided with some stop devicewhich when in operative position. will limit the downward movement ofthe spindle so that when said device is in operative position thefeeding mechanism will operate in the same way as occurs when a shoe isplaced on the horn. Such stop devices are usually arranged at the upperend of the spindle, but in my invention the stop device is arranged toco-act with the bracket portion 200 and is, therefore, in a much moreconvenient position to manipulate than when it is located at the upperend of the spindle. This stop device is shown in Fig. 3, and is in thenature of a pin 142 slidably mounted in a bearing 1&1. The end 143 of'the pin is adapted to enter an aperture 144: shown in dotted lines Fig.3 formed in the bracket 200 when said pin is thrownforwardly. While themachineis working the stop pin is in retracted position, as shown inFig. 3, but if it is desired to operate the wire-feeding mechanismwithout placing a shoe on the horn, the stop pin 1&2 is pushed to theright Fig. 3, until the end 1&3 enters the slot or opening 144. When thestop pin is in this position and the machine is started, the downwardmovement of the bracket 200 and the sleeve 7 will be arrested by saidstop device in substantially the same way as would occur if a shoev wereon the horn and the downward movement of the sleeve 7 were limited bythe engagement of the presser-plate 37 with the heel of the shoe. Theoperator can, therefore, watch the operation of the machine and note theamount of wire which is meas ured ofi and fed from the machine at eachoperation thereof. The placing of the stop device in the position shownmakes it much easier to manipulate than when it is located at the upperend of the spindle.

My invention also includes an improved double row mechanism by which theslugs or fastenings may be driven in double or single row as desired.The feed bar 6 is operated in usual manner to feed. the stock forward,it being mounted in a swinging frame pivoted to the standard 5 to swingabout the vertical axis 71. Said feed bar slides back and forth inbearings 73 carried Cit ceases ,j

the pitman 51 so thatthe rising and falling movement of the pitman willcause the actu-- ator '75 to rise and tall. These parts are of usualconstruction and the vertical movement oi the actuator operates to givea re ciprocating movement to the feed bar through the cam surface andthe spring 7 1 in a well known manner. For providing for inserting thetastenings nearer to or farther from the edge of the heel according ;towhether the fastenings are to be putin a double or single row, I haveprovided a treadle-controlled mechanism for positioning the stud 77toward and from the stand ard 5. 1n the present embodiment of myinvention said stud is shown carried by a lever 80 which is pivoted at81 to a fixed support, such, for instance, an arm extending from thestand The lever 80, see Figs. 2 and 3, is normally held in the positionshown in Fig. 3 by means ot a movable stop 8st, said lever preferablyhaving an. adjusting screw 85 therein to engage the stop, although thisis not essential. When the step 8 1 is in the position shown in 3, thefeed bar 0 is in the proper position so that the fastenings will beinserted in the outer'row near the periphery of the heel. If, however,the stop 84 is moved into its inoperative position, the spring 74 willforce the feed bar 0, actuator and stud 77 backwardly into a pos tionwhich permits the heel to he placed so that the tastenings will bedriven in an inside row. The latter position of the stud 77 is securedby a stop or projection on the stand 5 with which the lever 80 or anadjusting screw 87 carried thereby is adapted to engage. Iprefer to usethe adjuring screws 85 and 87 for ei'igaging the stops 8%: ant 80, forthey provide for more accurately adjusting the feed bar. The stop 8 maybe thrown into its operative or inoperative position in any suitableway. As one convenient way l have shown it as inounted on a swinoing arm88 which is pivoted to the stand 0 at 89, see Fig. 3, and which hasconnected thereto a link 90 leading to suitable trcadle mechanism. Thestop Si is normally held in its operative position by means of a spring91 which is secured to the arm 88. \Vhen the rod 90 is drawn down by thetrcadlc, the stop S t, which may conveniently be in the form of a roll,is carried out of its engagement with the adjusting screw 87; thusperrouting the upper end of the lever 80 to swing forward until the saidscrew ST enthe stop 80.

The shaft 10 driven from a suitable,

driving pulley which is loosely mounted on the shaft but which isadapted to be clutched thereto by some suitable clutch nn-chanisni. Theclutch device herein shown (:(rlllpE'lSQS a clutch ring 101 rigidlysecured ;;1 the driving'pulley 100 and." provided with a plurality ofapertures 102, into one of which a clutch pin 103 is adapted to beinserted. Said clutch pin 103 playsbaek and forth in a hub 10.4: rigidwith the shaft 10. A spring 105 tends normally to force the clutch pinforwardly into engagement with the clutch ring 101. The clutch pin 105is provided with shoulder 106 which is adapted to engage a wedge-shapedstop or clutch-(iisengaging member 10'! the shaft rotates, and when saidwedge-shaped member does thus engage the shoulder 106, the clutch pin iswithdrawn, thus disengaging the clutch. This wedge-shapedclutch-disengaging member 107 is carried by an arm 108 which is pivotedto the frame at 109 and has connected thereto a link 110 leading to asuitable treadle mechanism not shown.

111 a spring acting on the arm 109 that tends normally to keep theclutch-disengaging member 107 in operative position. The clutch isthrown into engagement by pulling downwardly on the link 110 by means ofthe treadlo mechanism thereby to swing the member 107' out of engagementwith the shoulder 106 and permitting the spring 105 to throw the clutchpin forwardly into clutching engagement with the clutch rin I haveprovided simple means separate and independent from the member 107 formaintaining tl e clutch pin disengaged from the clutch ring when it isdesired to operate the machine by hand. This mechanism comprises alocking pin 112 mounted in the shaft 10 and movable transverselythereof, the end of said pin being adapted to enter a recess 113 formedin the clutch pin when the latter is withdrawn. This locking pin 112 iscontrolled as to its position by a controller 11 the end of which isformed into an inclined finger 115 that engages an inclined slot in thelocking; pin. The controller eX- tends axially of the shaft 10 and atits exposed end has a thumb piece 116 by means of which it may be movedlongitudinally. hen the controller is withdrawn, as shown in Fig. l, thelocking pin'is disengaged from the clutch pin 103 and the clutch is freeto be operated by the treadle. \Vhen the controller is forced inwardly,however, the

clutch pin is moved transver 21y by the inclined finger 115, thereby tocause the end of the locking pin to engage the notch 113 and lock theclutch pin from movement.

Before the machine is operated it is necessary to adjust thewire-grippingmechanism for the size of wire to be used, so that saidgripping mechanism will properly operate on the wire. This is commonlydone by removing the spindle extension and the grippers and then takinga short piece of wire and inserting it through said spindle ex tensionbetween the grippers, and then turning the gripping sleeve 14 and thegripperi actuating ring 13 relative to each other to force the grippersfirmly. against the wire and thereafter inserting the spindle exten sionand sleeve 14 back into the working head and securing the sleeve 15 inposition by means of the clamping screw 16. This adjustment of the partswhen the spindle extension is removed frointhe machine is more or lessdiilicult and l have provided an improved positioning device which hasfor its object to assist the operator in thus adjusting the parts forany size of wire. This positioning device is constructed to engage thespindle extension and the arms 12 of the gripper-actuating ring 13 andhold said parts from rotation while permitting the gri )ing sleeve letto be turned thereby to force the grippers against the wire which haspreviously been inserted through the spindle extension. This positioningdevice is preferably attached to the frame of the machine in someconvenient position, as shown in Fig. 1, and it comprises a cylindricalshell 125 extending from the frame (see Figs. 1, 15 and l?) and fromwhich extends two holding lugs 120. The frame of the machine also hasextending therefrom a positioning lug r21 wlich is situated within theshell 125.- The holding lugs 120 are of the same shape as the ALAS 11depending from the coupling 0 chuck it) and are, therefore, of a. shapeto fit between the arms 12 extending from the grippen actuating ring.The positioning lug 121 is of a size to be received in one of thegrooves 123 in the spindle extension. In using this device a piece ofwire is first inserted through the spindle extension after the latter removed from the machine, and theend of the I spindle extension is theninserted. into the shell 125 with the positioning lug i521 fitting thegroove 123. The arms 12 are ihen turn ed until they interlock with theholding lugs 121. \Vhile the parts are held by the positioning andholding lugs the sleeve l i is turned relative to the gripper-actuatingring 13 thereby to cause the grippers to engage the wire. The relativepositions ofv the holoing lugs 120 and positioning lug 121 are the .sameas the relative positions of the recesses in the presser'plate for thedowels 130 and the arms 11 of the coupling or chuck it) so that. whenthe sleeve 14: is tightened, the parts are in proper position relativeto each other so that when the spindle extension is inserted into theworking head the dowel pins 130 will fit the recesses or aperturesformed in the prcsser-plate 37 and the arms 12 of the grippcractuatingring will {it between the arms 11 of the coupling member 10. The spindleextension and the corresponding parts are held in position after beingthus inserted by the clamping screw 16, as above described. After thegripping sleeve 14has been tightened, however, and before the spindleextension is inserted into as seas the working head, the sleeve 15 isapplied to the sleeve lat and is given a partial turn to cause thethreads 126 on the sleeves 14: to interlock with the threads on thesleeve 15.

The drawings showthe preferred embodiment only of my invention and noattempt has been made to illustrate other embodiments thereof.

Having fully described my invention, What I claim as new and desire tosecure by Letters Patent is l, in a machine for inserting fastenings,the combination witha working head, a spindle therein, a spindleextension,.grippers operating in the spindle extension, and

gripper-actuating ring, of means for disributitig the wear between thegrippers and .aid ring over the entire end surface of the after.

2. In a machine for inserting fastenings, the combination with a workinghead, a spindle therein, av spindle extension, grippers operating in thespindle extension, and a grippenactuating ring, of a bearing ringinterposed between the gripper-actuating ring and the grippers.

in a machine for inserting fastenings, the combination with a workinghead, a-

spindle therein, a spindle extension, grippers operating in the spindleextension, and a grippor'actuating ring, of a bearing ring intc-aposedbetweenthe gripperactuating ri. g and the grippers, said bearing ringbeing secured to the gripper-actuating ring (3 the latter being free toturn relative to the bearing ring.

3 combination with a working head, a

spindle and spindle extension therein, gripper carriers slidable in thespindle extension, grippers sustained by said carriers, and agripper-actuating ring, of means to permanently retain said carriers tosaid ring.

5, In a machine for inserting fastenings, the combination with aworkings-head, a, spindle and spindle extension therein, gripmachine forinserting fastenings,

per carriers slidablc in the spindle extenslo'n,

grippers sustained by said carriers. and a grippm-actuating ring, of abearing ring situated between the gripper-actuating ring and thegrippers and permanently secured to the grippercarriers.

In a machine for inserting fastenings, the combination with a Workinghead, a spindle and spindle extension therein, Wiregripping mechanism,and throat pieces at the end of the spindle extension through which thewire extends, of a wedge adjustable longitudinally of and engaging oneof the throat pieces by which said throat piece may be adjusted relativeto the other throat piece, and a clam )ing screw for holding the Wedgein adjustec position.

7. In a. machine for inserting fastenings, the combination with aWorkmguhead, a,

- with eeeeee sleeve therein and movable relative thereto,

i the con'ihmatlon with a. work support 1 feed bar, of means to positionthe feed oer in wire-feeding devices operated by said working head, of apresser-plete pivot-ally sustained by said sleeve to swing downwardlytherefrom.

In a machine for inserting 't'ast'enings, the combination withvworking"head, a

a spindle extension, wire-heating devices associated with the spindleextension erated by the working head, and a presserplate pivoted to saidsleeve to swing downwardly therefrom. v

9. in a machine for inserting fastenings, the combination with a drivingshaft having a crank, of e. Wire-feeding anism including avertically-extending spindle, a. curved yoke pivoted at one enil andextt ding around the inner side of said spindle, yoke to oscillate thelatter by rotation of the former, an arm adjustably connected to andextending laterally from the spindle toward the yoke, and a pivotalconnection ber engaging the dowel projections, said resser t veen saidyoke and said arm.

10. in a machine to msertlng tastemngs,

the combination with a spindle, of? a yoke,

means to oscillate the yoke, an arm extendand provided laterally fromthe spindle ing an eccentrically-sitnated eye, and

a link pivotally and having a pivotal connection with the yoke. i

11. in a. machine for inserting itastenings, the continuation with aworking head and wire-gripping and feeding mechanism operated thereby,of a sleeve situated within the working head, said sleeve having abracket at its lower end, a presser-plate sustained by said hraoket, anda stop device adapted to engage the bracket to limit the dowmvardmovement of the sleeve.

2. lna machine for inserting fastenings, lhecomliination with it workinghead and wire-grippers actuated thereby, of a sleeve situated within theworking h ad and havinp a bracket at its lower end provided with a slot,a stop pin mo *ll'lly sustained in fixed hearings and adapted when inoperative position to engage said slot and limit the downward movementof the sleeve.

in a machine for insertingfasteners, the combination with a Work supportand 'ork positioning means, 0t devices connected to said workpositioning means to determine any ono ol a plurality oft positionsthereof, a. stop to limitlhe. movement of said work positioning nn-ansmeans tor moving}; said slop out oli operative position, a. second stopcooperating with the work positioning: means when said first. stop isout of operative position, and men s to insert a plurality of fan:tening's sncces vely with the work positionin g means in any one. ofsaid plurality of po- 1 position, and means to insert pl ve therein, aspindle within the sleeve, tastenings succe sively with the/he..."

end op- I the combination with e. Working head and;

. tachablelfi'rom the working and driving mechl o position theconnections between said crank and 1 and slidsoly connected to the eyelet. In a machine for inserting fastenings,

any one of a plurality of positions, :1 st limit the movement of saidmeans, means A moving said stop into and out 01" ope? position.

15. In av machine for inserting tastenings,

spindle therein, of a spindle extension dehead, grippers and agripper-actnating ring carried the; by, of means separate from theworking spindle and the gripper-item ating ring properly relative toeach prior to placing them in the working head.

16. In a machine for inserting metallic tastenings, the combination of ahead, a sleeve therein, a spindle within t K:

sleeve, 3 removable spindle extension heving projecting dowel portions,Wire feeding devices, and a. presser plate having recesses plate beingpivoted to the said sleeve to swing downward to permit the properassembling of the parts.

17. In it machine inserting metallic fnstenings, the combination of a.

head and wire gripping and feed mechanism.

, operated thereby, a sleeve situated within the working head, a.presser plate sustained by said sleeve, and a stop pin disposed ad acentthe lowe' portion of the sleeve to limit the downward movement of thesleeve when the grippers and o. gripper actuating ring, end

working e means comprising; the part 125 and logs 120 separate from theworking heed to position the spindle and gripper actuating ring properlyrelative to each other prior to placing them in the working head.

19. In ,a machine for inserting metellic fasteners, the combination ofa. workin. head, a sleeve therein and movable relativ thereto, a spindlewithin the sleeve, spindle extension, wire feeding devices v with thespindle extension and operated by .the working head, :1 bracketconnected to sleeve, and a. presser plate pivoted to the bracketadjacent the lower end of the spindle extension to swing in a directiondownwer and away from the end of the spindle exten sion.

in testimony whereof, l. have siriined my name to this specification, inthe presence of two subscribing witnesses.

THOIJAS G. PLANT.

Witnesses:

l IRENE Cimnnmn, Fnnonmon. L. Elmer.

